Document 0JQnZYxXDM25Vajgdy6aDNdkn

PLAINTIFF'S EXHIBIT BRK-154 Janeary 22, 1962 Mr. A* Vf. Havollta General h|iMr 0.3. Anqr Weapons fo--and Cleveland Tank^Avtonotlve Plant 6200 UvanUa Drive dwaland , Cfeiio Oaar Kr. Harrelhat &Mloaa4 are tM aapiaa of n report on tiw visit oedo to the plant January 11, 1963. r Beenlta of the testa eade ore abeen la oeetien 4 of the report* Ataoaphsrlo oendltlena la the veKln^ area appeared to be satisfactory at the tin# of tips visit. Ventilation aaaaa to be odoqeeto and this eoeCU depend upon proper operation of the badldlnf fan vent!lotion gratae. Please oontaet thtalDiviaion any ties it any be'of serrloe rofardlnf aottore pertaining to ooeldoat prevention or lnrfnetrial hygleno. Tory troly youre. ABSrf Albert X. 3eholblo, P.t. Safety Sagineer Jamlory 22, I960 Rat U. S. Anqr Vapetu Ciurri Cleveland Tank-Automotive Plant Allison Mr*, Ooneral Nston Corp* 6200 Riverside Dr. Cleveland, Ohio (to January 11, 1962 a visit was aada by tba writer to tha eubjeat plant in Cleveland, Ohio. Tha visit was requsated by Mr* Sosa. Ollvurlo, Dlatrlst Supervisor of this Division to oheak for tarns in tha welding aros, flsswwnt srss and alkali no 11ns. ConUetsd at tha plant were Mssars. A. V. Kavslka, Osnsrsl feglneer. Defense Supply Agsnay) A. J. Bohfcsr, Safety Ssdnoar, Osnsral Motors Allison Division} L Snipart, Xn charge of safety, Osnsrsl Motors Allison Division) and 0. Itrtsfc* General ffnisssn ovsr voiding. At this looatlon tbs operating ooapacgr ikecurrently engaged in anufhcturlnf srdnanos for tbs fsdsral povowsat. Ths naln voiding arss is on tbs first floor in an lntorior looatlon nosr tbs south and of ths plant. It was thosght tba arsa would bo equivalent to about two aarss but it ooald bs sore than this. Currently, thcrs ars 173 wsldsrs on tbs first shift and 96 on ths ssoond shift. Most of tbs voiding is aluainum. Itoe to ths largo mmfeer of wsldsrs, it appaarsd that oetuol voiding vas always bolng dons sonsohsrs in ths aros. Howsvsr, ths voiding activity by individuals appsarod shoot ths sans as in ary norsal industrial plant, i.s., about 30% to 35% of tins spent In actual welding. Ths floor spaos par individual woldor is vary a^jls, on average perhaps oonaldsrably nsrs than 10,000 eebio foot par voider without requiring nedhanleal ventilation, as rssswssndsd hr American Voiding Society Standard Z49*l-195. Straight are stick welding and thlsldsd ars spool wire welding are performed. Tests wars nods at two locations where argon shielded arc oluednun welding was in progress. A Draeger instrument woo used. Results are shown in tbs table below. Location Just north of eoltan EEL3 Just north of oolwsi HQ3 Just northwest of oalusn KCL7 Consent ration Tost for ppu Nitrogen dioxide 1.0 Phosgsns 0 Kltrous oxide plus Nitrogen dioxide 1.0 TIT ** 5.0 0.1 mm. U.S. Angr WMpon> Cleveland, ado January 22, 1968 Pi| 2 * porta of (m par Million porta of oir fcy volum. ** Threshold Holt value. The taat for nltrog-- dioxide wea wall below the thraahold Holt value and phosgene was net dataotad. Tba latter taat was aada baaoaaa of tba poaelbilltjr of --tal cleaning with o chloriaetod bydroearboa. It woo later loomed that at mining la done with aoop detergent, water rlnae and oaklta. Thraahold Holt values refer to air-borne eoneantratiena of substances and rapraaant eondltlona under which It la believed that nearly all workers mmj be repeatedly exposed, day after day, without adverse offact. However, it la generally recognised that a wido variance of susceptibility exists aowmg different people with respect to the toado effeot of various edbetsnoss. It ie net loplled or rooo--nriod tut eondltlona be such a to perait oonoantratlaas to re--In at/or near thraahold Holt values. Thera la no separate --ehaaieal exhaust ayut-- for tho welding area. Kona should be noaeesary for atnoaphorio eondltlona observed on the data of this visit. It was thought these oendltiona ware nemol or possibly not quit# aa feed aa nor--1. x Thera are oil fired air heatare In the baa--ant, of the building. Baatad air circulates upward naturally Item tba baas--at. Outside air la brought Into the building fcy fine in the roof. Thirw are about 18 such fans In tho roof of a baloooy aaehino shop looatad ever tba welding araa. To bring this air to tho first floor there are wall fane in tba north aaehino shop balcony wall. There are also Sana roof fane ever tho welding area In a higher oelllng area north of tho bolhcny. Air la reamed from the plant by eleven wall fans In the south wall of the building. The air intake --of fans wore Indicated on a blueprint to hare a capacity of 20,000 cfa each. The exhaust fans were indicated to have a capacity of 40,000 efia each. Authoritative sources differ to so-- extent on tho aweront of general ventilation required for welding operations. However, oil agree that ventilation ie neeeesary. The A--risen Conference of Govem--ntal Industrial Hygienists ranoe--ids 1000 efie par welder --lag 5/32" rad and up to 4500 eftt per weldor using 3/8" rad. They materials higher air flora are peoeesary. Hr another --thod or ..t-'m.Mrm M mm of about three air chaagae par hour ahon using tiara tba floor area. If farther states that ao air oontaaanatsc ty other then hu--n occupancy shall be used for genera?, raalraulatlon. Kit 0.3. deraland, Okie Jaanuy 22, 1%I 3 Tantllsti-- fbr tha warding im it tapplied at a pari of the general building ventilation. There appcare to bo adequate g--oral ventilation for the --ldlng operation! ah-- tha balldlng fan ventilation apet-- la properly opo--tad* It wi&i ba advisable to have a written pro--dim for operation of tha boHditf fan v--tllati-- apataa la tha hands of bay paraoonal raapanaibla far atnoapharla conditions in tha plant* There appaarad to ba eene baao in tha baa--t hall araaa. Thla varied bat-- elaar and kaagr daring foar dlffarant trlpa tferoatft eo-- of tha araaa* Thera --a no aoarea of oontln-- f--a g--eratlcp in tha baao* neat that eavld ba etatad. Xlkewlee, it --a cot known ahat night ba --ant kgr fta-- g--oration fr-- an alkalina Xlna* Tha has* In tha bat--t hall araaa --y have ba-- Am to angina axhaaat from a few ante--biles* If thara la no aaparato --ana of oachaaatlag oontaadnatod air trm tha-- araaa, tha advisability af paaadtting any autonoiive trafflo la qpaatl--ad* Thara la a--olds--hla offloa spa-- in tha ha----t. M--tad ha>--nt air la olronlatad in tha ant spa-- on tha flrat floor* This --ray haa ha-- --do mWr Saati-- 10*5*41 af IC-fJ, Sp--ifie Safety Bagelr--to of Tha Indartrial Ct--laal-- of CXdo Balating Th All ifarkshope And Factories* Bo raoo--ndatiaca are --da at this tins. KeepeetfhUy --knitted. AKStf llbart X* Seheibla, P.K. Safety Btiglneer